The Solar System
A group of objects in space that orbit a star.
What is a solar system?
What is deep space?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What is the order of the planets?
Mostly nitrogen and oxygen, with smaller amounts of other gases.
What is the the atmosphere what of?
The force that pulls all objects toward each other.
What is gravity?
The two categories scientists use to group planets.
What are gas giants and terrestrial.
What does the word galaxy mean in this sentence?
What is a system made up of millions or billions of stars, held together by gravity?
This object takes 24-hours to revolve around the Sun.
What is Earth?
The heat Earth receives from the Sun would be lost into space, and Earth would be much colder.
What would happen without the greenhouse effect?
Spinning around a center, or axis.
What is rotating?
What are asteroids?
Dwarf, giant, and supergiant are all type of this.
What is deep-space star?
The reason the moon appears to give off light.
What is the Sun?
This pulls molecules toward Earth, packing them together creating air pressure.
What is gravity?
A measure of the amount of radiating or reflected light coming off a star or other celestial object; brightness.
What is luminosity?
The difference between dwarf planets and actual planets.
What is the area surrounding each celestial body?
Suggests that the universe began from a single, enormous explosion and is still expanding.
What is the big bang theory?
The Sun is a type of this.
What is a star?
Where weather happens?
What is the troposphere?
Moves in a circle around something.
What is revolves?
The reason the tail of a comet always points away from the sun.
What is a solar wind?
Size, luminosity, temperature, color, and life span are examples of this.
What are ways that starts are different?
The reason the Moon circles the Earth thirteen times a year, but there are only twelve months.
What is the Moon's revolution?
The force that air puts on an object.
What is air pressure?
Scientists who study the origin and structure of the universe.
Who are cosmologists?